Cargando…

Effect of Graded Facetectomy on Lumbar Biomechanics

Facetectomy is an important intervention for spinal stenosis but may lead to spinal instability. Biomechanical knowledge for facetectomy can be beneficial when deciding whether fusion is necessary. Therefore, the aim of this study was to investigate the biomechanical effect of different grades of fa...

Descripción completa

Detalles Bibliográficos
Autores principales: Zeng, Zhi-li, Zhu, Rui, Wu, Yang-chun, Zuo, Wei, Yu, Yan, Wang, Jian-jie, Cheng, Li-ming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5337791/
https://www.ncbi.nlm.nih.gov/pubmed/29065645
http://dx.doi.org/10.1155/2017/7981513
_version_ 1782512439999332352
author Zeng, Zhi-li
Zhu, Rui
Wu, Yang-chun
Zuo, Wei
Yu, Yan
Wang, Jian-jie
Cheng, Li-ming
author_facet Zeng, Zhi-li
Zhu, Rui
Wu, Yang-chun
Zuo, Wei
Yu, Yan
Wang, Jian-jie
Cheng, Li-ming
author_sort Zeng, Zhi-li
collection PubMed
description Facetectomy is an important intervention for spinal stenosis but may lead to spinal instability. Biomechanical knowledge for facetectomy can be beneficial when deciding whether fusion is necessary. Therefore, the aim of this study was to investigate the biomechanical effect of different grades of facetectomy. A three-dimensional nonlinear finite element model of L3–L5 was constructed. The mobility of the model and the intradiscal pressure (IDP) of L4-L5 for standing were inside the data from the literature. The effect of graded facetectomy on intervertebral rotation, IDP, facet joint forces, and maximum von Mises equivalent stresses in the annuli was analyzed under flexion, extension, left/right lateral bending, and left/right axial rotation. Compared with the intact model, under extension, unilateral facetectomy increased the range of intervertebral rotation (IVR) by 11.7% and IDP by 10.7%, while the bilateral facetectomy increased IVR by 40.7% and IDP by 23.6%. Under axial rotation, the unilateral facetectomy and the bilateral facetectomy increased the IVR by 101.3% and 354.3%, respectively, when turned to the right and by 1.1% and 265.3%, respectively, when turned to the left. The results conclude that, after unilateral and bilateral facetectomy, care must be taken when placing the spine into extension and axial rotation posture from the biomechanical point of view.
format Online
Article
Text
id pubmed-5337791
institution National Center for Biotechnology Information
language English
publishDate 2017
publisher Hindawi Publishing Corporation
record_format MEDLINE/PubMed
spelling pubmed-53377912017-03-19 Effect of Graded Facetectomy on Lumbar Biomechanics Zeng, Zhi-li Zhu, Rui Wu, Yang-chun Zuo, Wei Yu, Yan Wang, Jian-jie Cheng, Li-ming J Healthc Eng Research Article Facetectomy is an important intervention for spinal stenosis but may lead to spinal instability. Biomechanical knowledge for facetectomy can be beneficial when deciding whether fusion is necessary. Therefore, the aim of this study was to investigate the biomechanical effect of different grades of facetectomy. A three-dimensional nonlinear finite element model of L3–L5 was constructed. The mobility of the model and the intradiscal pressure (IDP) of L4-L5 for standing were inside the data from the literature. The effect of graded facetectomy on intervertebral rotation, IDP, facet joint forces, and maximum von Mises equivalent stresses in the annuli was analyzed under flexion, extension, left/right lateral bending, and left/right axial rotation. Compared with the intact model, under extension, unilateral facetectomy increased the range of intervertebral rotation (IVR) by 11.7% and IDP by 10.7%, while the bilateral facetectomy increased IVR by 40.7% and IDP by 23.6%. Under axial rotation, the unilateral facetectomy and the bilateral facetectomy increased the IVR by 101.3% and 354.3%, respectively, when turned to the right and by 1.1% and 265.3%, respectively, when turned to the left. The results conclude that, after unilateral and bilateral facetectomy, care must be taken when placing the spine into extension and axial rotation posture from the biomechanical point of view. Hindawi Publishing Corporation 2017 2017-02-19 /pmc/articles/PMC5337791/ /pubmed/29065645 http://dx.doi.org/10.1155/2017/7981513 Text en Copyright © 2017 Zhi-li Zeng et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Zeng, Zhi-li
Zhu, Rui
Wu, Yang-chun
Zuo, Wei
Yu, Yan
Wang, Jian-jie
Cheng, Li-ming
Effect of Graded Facetectomy on Lumbar Biomechanics
title Effect of Graded Facetectomy on Lumbar Biomechanics
title_full Effect of Graded Facetectomy on Lumbar Biomechanics
title_fullStr Effect of Graded Facetectomy on Lumbar Biomechanics
title_full_unstemmed Effect of Graded Facetectomy on Lumbar Biomechanics
title_short Effect of Graded Facetectomy on Lumbar Biomechanics
title_sort effect of graded facetectomy on lumbar biomechanics
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5337791/
https://www.ncbi.nlm.nih.gov/pubmed/29065645
http://dx.doi.org/10.1155/2017/7981513
work_keys_str_mv AT zengzhili effectofgradedfacetectomyonlumbarbiomechanics
AT zhurui effectofgradedfacetectomyonlumbarbiomechanics
AT wuyangchun effectofgradedfacetectomyonlumbarbiomechanics
AT zuowei effectofgradedfacetectomyonlumbarbiomechanics
AT yuyan effectofgradedfacetectomyonlumbarbiomechanics
AT wangjianjie effectofgradedfacetectomyonlumbarbiomechanics
AT chengliming effectofgradedfacetectomyonlumbarbiomechanics